Ceil, floo, and round functions in php

Ceil is a function for getting a value from the up position; floor is a function for rounding out the decimal places to get a value; round is a function for rounding out. Ceil definition and usage: the ceil () function rounds up to the nearest integer. [Php] ceil (x); Description: return the next integer not less than x. If x has a decimal part, the return value is one. Ceil (

Ceil is a function for getting a value from the up position; floor is a function for rounding out the decimal places to get a value; round is a function for rounding out. Ceil definition and usage: the ceil () function rounds up to the nearest integer. [Php] ceil (x); Description: return the next integer not less than x. If x has a decimal part, the return value is one. Ceil (

Ceil is a function that returns a value in the ascending order;

Floor is a function used to remove the decimal places to get a value;

Round is a rounding function.

Ceil

Definition and usage:

The ceil () function rounds up to the nearest integer.

[Php]

Ceil (x );

Ceil (x );

Note:

Returns the next integer of no less than x. If x has a decimal part, the return value is one digit.

The type returned by ceil () is still float.

Example:

[Php]

Echo ceil (1, 0.60 );

Echo"

Echo ceil (1, 0.40 );

Echo"

Echo ceil (5 );

Echo"

Echo ceil (1, 5.1 );

Echo"

Echo ceil (-5.1 );

Echo"

Echo ceil (-5.9 );

?>

Echo ceil (1, 0.60 );

Echo"

Echo ceil (1, 0.40 );

Echo"

Echo ceil (5 );

Echo"

Echo ceil (1, 5.1 );

Echo"

Echo ceil (-5.1 );

Echo"

Echo ceil (-5.9 );

?>

Output:

[Php]

1

1

5

6

-5

-5

1

1

5

6

-5

-5

Floor

Definition and usage:

The floor () function rounds down to the nearest integer.

[Php]

Floor (x );

Floor (x );

Note:

Returns the next integer not greater than x and rounds the decimal part of x.

The returned type of floor () is still float.

Example:

[Php]

Echo (floor (0.60 ));

Echo"

";

Echo (floor (0.40 ));

Echo"

";

Echo (floor (5 ));

Echo"

";

Echo"

";

Echo (floor (5.1 ));

Echo"

";

Echo (floor (-5.1 ));

Echo"

";

Echo (floor (-1, 5.9 ))

?>

Echo (floor (0.60 ));

Echo"

";

Echo (floor (0.40 ));

Echo"

";

Echo (floor (5 ));

Echo"

";

Echo"

";

Echo (floor (5.1 ));

Echo"

";

Echo (floor (-5.1 ));

Echo"

";

Echo (floor (-1, 5.9 ))

?>

Output:

[Php]

0

0

5

5

-6

-6

0

0

5

5

-6

-6

Round

Definition and usage

The round () function rounds a floating point number.

[Php]

Round (x, prec );

Round (x, prec );

Where

X (optional) specifies the number to be rounded.

Prec (optional) specifies the number of digits after the decimal point.

Note:

Returns the result of rounding x to the specified precision prec (number of digits after decimal point.

Prec can also be a negative number or zero (default ).

Example:

[Php]

Echo round (12.345,-1 );

Echo"

Echo round (12.345 );

Echo"

Echo round (0.5 );

Echo"

Echo round (0.4 );

Echo"

Echo round (-0.5 );

Echo"

Echo round (-0.4 );

?>

Echo round (12.345,-1 );

Echo"

Echo round (12.345 );

Echo"

Echo round (0.5 );

Echo"

Echo round (0.4 );

Echo"

Echo round (-0.5 );

Echo"

Echo round (-0.4 );

?>

Output:

[Php]

10

12

1

0

-1

-0